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Kubernetes Native with Quarkus Ken Finnigan, Senior Principal Software Engineer RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019

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Kubernetes Native with Quarkus Ken Finnigan, Senior Principal Software Engineer RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Kubernetes Native with Quarkus Ken Finnigan, Senior Principal Software Engineer RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Introductions ● Technical Lead for Eclipse MicroProfile at Red Hat ● Project Lead for SmallRye ○ Implements Eclipse MicroProfile ● Book Author ○ Enterprise Java Microservices Name: Ken Finnigan Role/team: MP/SmallRye Where you’re from: Boston (via Aus) 2 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 3 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 An Open Source stack to write Java apps Cloud Native, Microservices, Serverless 4 Source: Insert source data here Insert source data here Insert source data here WHY QUARKUS? 5 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 The hidden truth about Java + containers ● Designed for throughputs (requests/s) ● Startup overhead ○ # of classes, bytecode, JIT ● Memory overhead ○ # of classes, metadata, compilation Heap Metaspace off-heap RSS 6 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 The hidden truth about Java + containers HotSpot Heap NodeJS Go Go NodeJS Go Go HotSpot Heap NodeJS Go Go NodeJS Go Go HotSpot Heap NodeJS Go Go NodeJS Go Go HotSpot Heap NodeJS Go Go Node Node Node Container platform 7 WHAT IS QUARKUS? QUARK: elementary particle / US: hardest thing in computer science 8 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Quarkus Benefits Developer Joy Supersonic Subatomic Java Unifies Best-of-breed imperative and reactive libraries and standards 9 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Benefit No. 1: Developer Joy A cohesive platform for optimized developer joy: ● Based on standards, but not limited ● Unified configuration ● Zero config, live reload in the blink of an eye ● Streamlined code for the 80% common usages, flexible for the 20% ● No-hassle native executable generation 10 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Benefit No. 2: Supersonic Subatomic Java REST Quarkus + AOT Quarkus + OpenJDK (JIT) Traditional Cloud-Native Stack 19 MB 77 MB 140 MB 11 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Benefit No. 2: Supersonic Subatomic Java REST + CRUD Quarkus + AOT Quarkus + OpenJDK (JIT) Traditional Cloud-Native Stack 35 MB 130 MB 218 MB 12 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Benefit No. 2: Supersonic Subatomic Java REST Time to first response Quarkus + AOT 0.014 Seconds Quarkus + OpenJDK 0.75 Seconds Traditional Cloud-Native Stack 4.3 Seconds REST + CRUD Quarkus + AOT 0.055 Seconds Quarkus + OpenJDK (JIT) 2.5 Seconds Traditional Cloud-Native Stack 9.5 Seconds 13 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Benefit No. 3: Unifies Imperative and Reactive @Inject @Inject @Channel(”kafka”) SayService say; Publisher<String> reactiveSay; @GET @GET @Produces(MediaType.TEXT_PLAIN) @Produces(MediaType.SERVER_SENT_EVENTS) public String hello() { public Publisher<String> stream() { return say.hello(); return reactiveSay; } } ● Combine both reactive and imperative development in the same application ● Use the technology that fits your use case ● Key for reactive systems based on event-driven apps 14 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Benefit No. 4: Best of Breed Frameworks & Standards Quarkus provides a cohesive, fun to use, full-stack framework by leveraging a growing list of over fifty best-of-breed libraries that you love and use. All wired on a standard backbone. 15 HOW QUARKUS WORKS 16 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Move startup time to build time What does a framework do at startup time? ● Parse config files ● Classpath & classes scanning ○ for annotations, getters or other metadata ● Build framework metamodel objects ● Prepare reflection and build proxies ● Start and open IO, threads, etc 17 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Build time benefits ● Do the work once, not at each start ● All the bootstrap classes are no longer loaded ● Less time to start, less memory used ● Less or no reflection nor dynamic proxy 18 SPRING COMPATIBILITY 19 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Why Spring on Quarkus? ● Capitalize your Spring know-how ● Speed up knowledge transfer and onboarding ● Familiarity 20 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Spring DI and Web ● Spring DI and Web ○ Dependency injection model ■ @Component, @Autowired, etc. ○ Spring Web - Developing REST APIs ■ @RestController, etc. ● Spring Data JPA ○ Derived methods ○ Custom query methods ○ Fragments ○ Transactional support 21 NATIVE IMAGE 22 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Dead code elimination Java Java Application Application Classes Classes JDK JDK Native Classes Classes Executable Substrate Substrate VM VM Classes Classes Closed-world assumption 23 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 When to use which VM with Quarkus? JIT - OpenJDK HotSpot AOT - GraalVM native image High memory-density requirements Highest memory-density requirements High request/s/MB Highest request/s/MB Fast startup time for low heap size usages Faster startup time Best raw performance (CPU) 10s of ms for Serverless Best garbage collectors Higher heap size usage Known monitoring tools Compile Once, Run anywhere Libraries that only work in standard JDK 24 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 Resources ● Demos ○ https://github.com/burrsutter/quarkus-todo-app ○ https://github.com/burrsutter/springtodo ● Quarkus ○ https://quarkus.io/ ○ https://code.quarkus.io/ ○ https://quarkusio.zulipchat.com/ ○ https://github.com/quarkusio/quarkus ○ https://twitter.com/quarkusio 25 CONFIDENTIAL Designator Thank you linkedin.com/company/red-hat youtube.com/user/RedHatVideos Red Hat is the world’s leading provider of enterprise open source software solutions. facebook.com/redhatinc Award-winning support, training, and consulting services make twitter.com/RedHat Red Hat a trusted adviser to the Fortune 500. 26 RED HAT DALLAS EMERGING TECH SUMMIT - DEC 5, 2019 - DEC SUMMIT TECH EMERGING DALLAS RED HAT STAY ENGAGED Developers. redhat.com Your access point for no-cost developer tools and product subscriptions, how-tos, and demos Red Hat User Groups Meetups for networking and tech deep dives www.meetup.com/Dallas-Red-Hat-Users-Group/ DevNation Virtual and live events Catch replays at https://developers.redhat.com/devnation/ Next.redhat.com Stay in touch with the Office of the CTO 27.
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